Upgrade bootstrap_form Gem

What does this MR do?

It upgrades bootstrap_form gem and fixes minor visual regressions in the user profile editor form caused by the upgrade.

What are the relevant issue numbers?

#49856 (closed), #57602 (closed)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated via this MR
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• Security reports checked/validated by reviewer

Closes #49856 (closed)